90199672 has 48 divisors (see below), whose sum is σ = 178466400. Its totient is φ = 42706560.

The previous prime is 90199661. The next prime is 90199679. The reversal of 90199672 is 27699109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90199679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1141729 + ... + 1141807.

It is an arithmetic number, because the mean of its divisors is an integer number (3718050).

Almost surely, 2^90199672 is an apocalyptic number.

It is an amenable number.

90199672 is a deficient number, since it is larger than the sum of its proper divisors (88266728).

90199672 is a wasteful number, since it uses less digits than its factorization.

90199672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 90199672 is about 9497.3507885094. The cubic root of 90199672 is about 448.4716413694.

The spelling of 90199672 in words is "ninety million, one hundred ninety-nine thousand, six hundred seventy-two".